Spring-tension creel



Feb. 12 1924.

' W. S. WELLS SPRING TENSION CREEL Filed Oct. 26, :s Shets-Sheet 1 W. S. WELLS SPRING, TENSION CREEL Feb. 12 1924.

Filed 001:. 26. 1922 3 Sheets-Sheet 2 anoeutoz SWIM/nu Feb. 12 1924. 1,483,563

w. s. WELLS SPRING TENSION CREEL Fil ed not. 26 L922 3 sheta-shet 8 Patented Feb. 12, 1924.

ours!) STATES 1,483,563. PATENT osrrrcn.

WILLIAM s. wants, or BETHLEHEM, PENNSYLVANIA, ssIenoR TO Jonas-Man- VILLE,INCORPORATED,ACORPORATION or nnw oa l SPRING-TENSION CREEL.

Application filed October 2.6, 1922. Serial No. 596,947.

To all whom it may concern. Be it known that I, VVILLIAM S. News, a citizen of the United States of America, residing at Bethlehem, in the county of Northampton and State of Pennsylvania, have invented certain new and useful Improvements in Spring-Tension Creels, of which the following is a specification.

Myinvention relates to looms. generally but is more specifically designed to produce a spring tension creel for use in looms weaving cloth or {bands containing fifty per cent or more of asbestos thread or yarn. Such asbestos thread or yarn has littleor no elasticity and to secure even weaving and avoid the breaking of thread or yarn, it is important that the tension on each thread shall the-accurately adjusted and the tension support highly. elastic and at the same time the respective threads be kept out of contact one with another until they are actually combined in the weaving operation.

My invention is designed to secure these desired results toa high degree and the best form of apparatus embodying the principles thereof at presentknown to me, .is illustrated in the accompanying three sheets of drawings in which- Fig. 1 is a plan view of the creel, with parts broken away;

Fig. 2 an end view thereof, with parts shown in section and others removed; and

Fig. 3 is a side elevation with parts broken away, including a portion of the loom harness.

Throughout the drawings like reference characters indicate like parts.

1 represents the supporting frame of the creel in which are mounted the bobbin support journal bearings 2, and the sheave supportingposts 9. In each bobbin supporting journal is mounted a bobbin or spool support comprising a vertical spindle 3, and a horizontal circular flange 4, said spindle havinga stepped ball bearing 5. 6 represents the spool or bobbin mounted on the bobbin support and rendered revoluble therewith by means of the pin 21, set in the flange 4 and engaging a recess in the bottom of the spool (not shown). 7,7, represent the warp therads which are unwound from their respective spools 6, 6, and pass first over the fixed guide-sheaves 8, thence over 'a springsupported guidesheave 11, and finally over a second fixed guide-sheave 10, from which latter the threads pass over the warp bear- 5 ing 17 to the heddles l8- and 191 of the har ness, each vertically reciprocated in guides:-

20 by the usual mechanism,not'shown.

The. fixed guide-sheaves 8 a-re journalledon horizontally extending rods 15, which are F. preferably supported by, being held.'by nuts to the' vertical central :strip 16, which is; perforatedto receive them. The said strip.

16 is clamped at either end to the posts. 9, and the above described method ofmounting these sheave-supports 15 in strip; 16, renders the sheaves adjustable in ahorizon tal plane toward and from the central strip.

16, if desired.

As shown, the fixed guide-sheaves 8 re- Volve in a vertical plane while the other:

is sup-1 the other end ofwhichis set. in a rigid support, preferably formed integral with the journal block 2 of thebobbin-supporting spindle and consisting of the slot .14, in,

which the extreme end of thespring 12 rests, and the adjustable tension screw 13,

which passes through a perforationin the spring 12 and is threaded into a socket in. the journal block 2.

As shown, the portion of the spring 12 intermediate between the end on which the sheave 11 is journalled and. the. point at which the adjusting screw 13 passes through it, normally bears upon the circumference of the flange 4 on the bobbin support.

The horizontal guide sheaves 10, as shown, are mounted in a plane approximately hori zontal, which plane passes through the heddles, but are set in lines slightly inclined to the path of the warp threads passing to said heddles, with the result that said warp threads are evenly spaced one from another and preserved from contact one with another until they have passed throughthe heddles to the weaving apparatus proper. In operation the spring 12 yields slightly each time the warp is pulled forward and readily adjusts itself so as to preserve a uniform tension on the threadwhether or not the same is pulled forward to a greater or less extent by the action of the loom. Atthe same time that the tension sheave is pulled forward by the thread, the friction of the spring 12 on the circumference of the bobbin support flange .4, is relieved more-or less and thus. any excessdraft on the warp thread creates a lessening of resistance to the unwinding of the. thread from the bobbin or spool 6, and this also assists in maintaining a uniform tension on", the thread independently of the rapidity with which it is unwound from the bobbin.

By the use of my invention a close. and

even fabric can be woven of asbestos threads or threads 'ofboth asbestos'and other fibre andavith little or no breakage of the ashes tos thread or yarn. a I I Various changes can be made in the details of the construction illustrated and dea result said tension sheave is capable of limited motion in all directions.

Having described my invention, I claim: 1. In a spring tension creel for looms the combination of a series of bobbin supports for thewarp threads, a series of springsuppo-rted guide sheaves, one for each bobbin, thesprin'gs for supporting said guide sheaves being capable of limited movement in all directions, sets of two corresponding guide sheaves lying, and being mounted to rotate in planes inclined one to the other over one of which sheaves the warp thread'trom each bobbin passes in going to the spring-sup portedsheave and over the other of which it passes after leaving the spring-supported sheave, the springssupported sheave being located outside of the straight line connecting said two guide sheaves.

2. The combination with a circular revoluble bobbin support for a thread and guide 'sheavesfor said thread, or" a yielding ten sion sheave located at a point intermediate of the two first mentioned sheaves, said tension sheave being mounted on one end of a flat spring, the other end of which is set in a fixed support, and an intermediate portion of which normally bears on the circumference of the bobbin support.

An apparatus such as set forth in claim 2, in which the fixed support for the spring comprises an adjustable member by which its normal friction on the bobbin support may be varied.

4. An apparatus such as set forth in claim 3 in which the bobbin support is carried by a vertical spindle having a ball forming its step bearing. 7 I

5. The combination, ports on which bobbins for the warp threads may be revolubly mounted, and a series of spring tension sheaves, one for each warp thread, of a series of fixed guide sheaves over one of which each thread passes after leaving its spring tension sheave, said fixed sheaves being mounted all in a plane passing through the heddles of the loom and on lines slightly inclined to the path taken by the threads on their passage to said heddles.

WILLIAM S. WELLS.

with a series of sup 

